Butt-welding pipe



Feb. 23,1926. v 1,574,411

W.- S. STEVENSON BUTT WELDING PIPE' Filed 001. 1o. 19,23

, 10s 1 F16/i Patented Feb. 23, 1926.

UNITED STATES yvvrnrrnnn sooTT sTnvENsoN, or zANEsvrLLE, OHIO.'

Appncatitnniea october 1o, 1923. serial' No. 667,728.

To all whom t may concern:

Be `it known that L VVViNFrnLD` SCOTT S'rnvnNsoN, a citizen of the United States,

residing at' Zanesville, 'in the county yof Muskingum and State of Ohio, have invented certain new anduseful improvements in Butt-Welding Pipes, of which the following is a specification.

The present invention is directed to im- `proveniente in bells usedfor butt weldingv pipes.

`The primary object of the invention is to provide adevice of this character soconstructed that the skelp can be drawn therethrough with very little effort, but at the same time the slrelp Will take a pipe form and its longitudinal edges will be firmly Welded during the drawing'operation.

A further Object of the invention is vto provide aldevice of this kind provided with a pair of aligned bearings of differentsize so that as the slrelp ispulled through the bearings it will be acted upon by both bearings so as to effectively Weld the longitudinal edges of the skelp to produce a section of pipe.

With these and other objects in view, as will appear as the description proceeds, the invention consists in the'novel features Of construction, combinations of elements and 'arrangements of parts, and hereinafter to be fully described and pointed out in the appended claims.

.ln the accompanying drawing:

Figure 1 is a longitudinal sectional View through the device, and l Figure 2 is a sectional-'view on line 2 2 of Figure 1. l

The device comprises a pair of sections il and 2 the former having a bell shaped mouth 3 Which opens into a longitudinal bearing 4, said mouth serving to bend the skelp 5 into initial pipe like form as the heated skelp is drawn thereinto in the usual manner.

The section 2 has a chamber' in its inner end Which is aligned with the bearing 4 of the section 1, said chamber. opening into a longitudinal bearing 7 of the section 2. This bearing is slightly less in diameter than the bearing 4 of the section 1 With which it aligns.

ln order to unite the sections 1 and 2 and hold the same suitably spaced. the section 2 has its inner end provided, with a plurality ot' bridge pieces 8, four of which are shown,

but it Will be of courseunderstood that the number may be varied if desired. bridge pieces are provided Withshoulders 9 and extensions 10. The extensions lapl upon the adjacent end of lthe section 1 and at' which .time the rim of lsaid section engages the Seats 9. These extensions 1() are fixed to the section lsothat the device will be a unitary structureand the,sectionsrigidly4 united by the bridge pieces 8. I

In operation theV slielp 5 will be curled as it is pulled into themouth 3 and will then ltake an initial pipe form as it passes through the bearing 4 andas `the skelpv is drawn into and throughthe bearing 7 the longitudinal edges Ythereof will be forced firmly into abutting relation andwvelded,

It Will be obvious that as the slrelpV is dravvn through the bearing 7 the proper reduction and elongation Will be obtained with no more effort on the part of theV Workman than if it Ywas pulled through the bearing only.

It sometimes Occurs when using a single.

These section or what is termed `in the trade as a bell the skelp when too hot and drawn therthrough the bearing is out and the pipe as Well as the section is a loss. VBy arranging the sections 1 and 2 in tandem, should the bearing of the section 1 be cut the section Would be a loss, but the` skelp would be properly drawn into pipe form by the bearing 1 7 of the section 2, and While both sections are lost the pipe is completed and is usable. Another advantage of having the bearing 7 in the section 2 smaller `than the bearingv 4 of the section l is that should the skelp be too Wide for the bearing 4 it Will be initial- 1y positioned so that its .side edges will be brought into proper alignment and finally into a Welding position as the skelp is successively drawn through the smaller bearings 7 and atV which time the edges Willbe in such alignment as to prevent overlapping thereof, thereby assuring a perfect 'butt Weld of the edges. By having the seotionsl and 2 arranged in tandem and varying the `size of the bearings the draft and reduction of a skelp in rforming a pipe Will be normal to the pull, and with proper handling of the skelp approximately 7 5 per cent of the bite Off and tong slip offs will be eliminated.

By employing the bridge pieces the sectionsare held longitudinally spaced a suf# flcient distance to permit cinders to drop from the skelp before passing into the section 2. rfhis space, however, is ot euch Size that the skelp will not cool utter leaving the section l and before passing into the Section 2 to such an extent ae to prevent :i perfect weld.

It will be observed that the bearings and 7 are ot substzu'itizilly the saine contour so that the slelp will be subjected to the Sarnenction as it is drawn troni the section l into the section 2.

What claimed is:

l. i'ipipe 'tc'irining bell coniiprieiiig a torining Section und u welding section, Suid seetions being provided With longitudinally aligned l'ieeringe7 the bearing in the forming section being oi' greater dizinieter than the bearing in the welding section, and seid Welding section being provided :it one end with a plurality et longitudinally extending transversely spaced bridge extensions having recesses providedzin the outer ende thereof for the reception ot the end of the Adjoining forming section, and the spaces between seid bridge extensions being such us to provide outlets :it intervals around the `lull eircuinterence ot' the bell.

2. A pipe forming bell comprising a forni ing section and a Welding section, seid sections being provided With longitudinally aligned bearings, the bearing in the forining section being ot greater diameter than the bearing in the welding section, :md one ot said Sections being provided with e plurality ot longitudinally extending transversely spliced bridge .extensions having recesfses provided in the ends thereof tor the reception oft' the conipleinental end of the ed joining section, the Spaces between said bridges providing outlets at intervals around the full circrunferenee of the bell.

A pipe torining bell cmnprising primary formi-ng Section and a Secondary Welding section7 seid sections being provided with longitndinully spueed axially aligned beurings, the bearing in the secondary section being of Smaller dizrrneter than .the beuring in the prin'niry section, and eind-er outlets provided at intervals around .the full cireuinterence ot seid bell between Suid bearings.

l. A pipe forming bell comprising a primary forming section und u separable Seconda-ry welding seetion, said sections being provided with longitudinally spaced axially aligned bearings, the bearing in the secondury section being ot smaller diameter then the conipleinentel bearing in the priinery section, und a socket'provided in the end ot one ot said sections for the reception of the adjoining end ot the other ot said Sections.

In testimony whereof I .atiiX my signature.

VNFIELD SCOTT STEVENSON. 

